28241720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54311}}^1$

素因数の和:54335

約数の個数: 32

約数和(自身を含む): 68433120

約数和(自身を除く): 40191400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54311, 108622, 217244, 271555, 434488, 543110, 706043, 1086220, 1412086, 2172440, 2824172, 3530215, 5648344, 7060430, 14120860, 28241720]

約数ペア:

[(1, 28241720), (2, 14120860), (4, 7060430), (5, 5648344), (8, 3530215), (10, 2824172), (13, 2172440), (20, 1412086), (26, 1086220), (40, 706043), (52, 543110), (65, 434488), (104, 271555), (130, 217244), (260, 108622), (520, 54311)]